CN108796159B - Modular detachable blast furnace cast house combined dust removal device - Google Patents
Modular detachable blast furnace cast house combined dust removal device Download PDFInfo
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- CN108796159B CN108796159B CN201810696501.6A CN201810696501A CN108796159B CN 108796159 B CN108796159 B CN 108796159B CN 201810696501 A CN201810696501 A CN 201810696501A CN 108796159 B CN108796159 B CN 108796159B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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Abstract
The invention discloses a modularized detachable blast furnace cast house combined dust removal device, and belongs to the field of blast furnace dust removal equipment. The device comprises a three-section pipe cover top suction dust removal device and a detachable skimmer dust removal cover, wherein the three-section pipe cover top suction dust removal device comprises a steel structure frame, a large-area three-section pipe cover top suction cover, a tuyere small sleeve safety baffle, three sections of pipe covers and a transverse wind resistance and fire prevention barrier; the large-area three-section pipe cover top suction device, the tuyere small sleeve safety baffle, the three-section pipe cover and the transverse wind resistance fireproof partition are respectively connected with the steel structure frame; the combined dust removal device for the blast furnace tapping adopts the design idea that the dust removal device of the skimmer and the modified large top suction hood are combined into a whole, so that the combined dust removal device for the blast furnace tapping is modularized, can be disassembled and the like, greatly improves the dust removal capacity of the tapping part of the blast furnace, and has simple structure, safety and reliability.
Description
Technical Field
The invention relates to the field of blast furnace dust removal equipment, in particular to a modularized detachable blast furnace cast house combined dust removal device.
Background
At present, a two-in-one combined dust removal device of a taphole large top suction dust removal cover and a skimmer dust removal cover belongs to a device of a taphole dust removal system, for a blast furnace provided with a horizontal tapping machine and a horizontal mud gun machine, the taphole top suction dust removal device is flush with a blast furnace tuyere platform through a cover top, namely, the taphole dust removal adopts a taphole powerful smoke removal mode, namely, the width and length characteristics of a tuyere platform are utilized to effectively enclose a taphole area, a top suction cover and an in-situ skimmer dust removal cover above the taphole skimmer area are arranged above an iron runner at the end part of the tuyere platform to respectively carry out powerful smoke removal, and smoke generated by the taphole is collected in the tuyere platform area to the maximum extent. The working efficiency of the dust removal of the cast house dust removal system is improved. Can be widely used in metallurgy, casting and other industries.
However, for the existing blast furnace, there are a lot of inconvenience in implementing the full sealing of the blast furnace frame area, and the existing travelling crane is restricted by the upright post of the main workshop of the existing cast house, so that the top suction dust removal device of the existing cast house which is separately arranged is very easily influenced by the transverse wind (commonly called as the wild wind) in the open area between the workshop of the cast house above the tuyere platform and the blast furnace frame, and the effective suction force of the top suction dust removal device is influenced, and the skimmer dust hood which is separately arranged from the top suction dust removal device can only effectively capture the smoke in the skimmer area of the molten iron runner, so that the dust and smoke in the working position of workers are diffused, the physical and mental health of the operators are seriously influenced, and the labor productivity is reduced. The major problems that arise are as follows:
the top suction dust removal device of the casting house has smaller area and limited width along the direction of the molten iron ditch, which seriously influences the suction force of the top suction dust removal device, so that the flue gas can not accurately enter the cover opening of the top suction dust removal device in time, and the sanitation of posts is influenced; even dust and smoke in a working place are diffused, so that the tapping machine cannot be ensured to accurately align to a tap hole in time for tapping and sand filling operation, and the normal operation of production is influenced;
the top suction dust removal device for the cast house has the advantages that the area is small, the width size is limited along the direction of the molten iron runner, the influence of transverse wind (commonly called as wild wind) is accelerated, even dust and smoke in the operation place are diffused, the blocking operation of the stemming machine cannot be timely and accurately carried out by stemming operators, and the normal operation of production is influenced. Meanwhile, the loss is serious, and the production cost is increased;
during the overhaul period, the clay gun machine and the support thereof transversely pass through the top suction dust removal device of the cast house (approximately parallel to the direction of the molten iron runner), and the possibility of scrapping the top suction dust removal device of the cast house is caused in serious conditions, so that the overhaul cost is increased.
During the operation of opening, molten iron discharging, sand filling and blocking the taphole, no matter the molten iron at the taphole splashes or molten iron in the molten iron ditch, the flue gas in an isolated area between the top suction dust removal device and the skimmer dust removal device of the existing cast house cannot be independently and effectively collected and pumped to a dust removal system;
when the height difference between the cover top of the blast furnace skimmer dust hood device close to the side of the tap hole and the tap hole large top suction hood is lack of a top baffle of the blast furnace skimmer dust hood, the caching capacity of primary and secondary smoke dust of the tap hole large top suction hood during tapping of the tapping machine and tapping of molten iron is reduced; secondly, the splashed or splashed blast furnace molten iron can hurt operators, so that safety accidents of the operators are caused, and the production cost is increased; thirdly, the environment of the casting house is influenced, and even the normal operation of production is influenced;
when the height difference between the cover top of the blast furnace skimmer dust hood device close to the taphole side and the taphole large top suction hood is lack of the integral integration of the top baffle of the blast furnace skimmer dust hood, the device can be close to the dispatching limit of the cast house travelling crane (especially the existing blast furnace cast house travelling crane). The existing driving safety operation is influenced;
when the dust hood of the skimmer of the blast furnace dust catcher device is close to the tapping hole side and the top baffle of the dust hood of the blast furnace skimmer lacks of heat insulation facilities, the normal operation is slightly influenced, and the burning loss of the dust hood of the skimmer of the dust catcher device of the blast furnace skimmer and the top baffle of the dust hood of the blast furnace skimmer is caused when the heat insulation facilities are serious, so that the maintenance cost is increased.
When the dust hood of the skimmer and the flue gas guide hood of the blast furnace skimmer dust hood device lack wide bases, the pressure loss possibly caused to the side of the molten iron ditch due to the pressure at the bottom of the hood is increased, and the production cost is increased.
Therefore, the development of the modularized detachable blast furnace cast house combined dust removal device has important significance for the field of blast furnace dust removal equipment.
Through search, patent schemes are disclosed. As in the Chinese patent: application No.: 201210049570.0, patent name: the utility model provides a blast furnace taphole dust excluding hood, authorizes day: 2012.02.29. the patent includes: the top suction dust hood is arranged above the outer side of a blast furnace taphole, and the side suction dust hood is arranged at one side of a molten iron ditch connected with the blast furnace taphole; the top suction dust hood comprises a first dust removing pipe and a first dust hood connected with the dust removing pipe; the side-suction dust hood comprises a second dust removal pipe and a second dust hood connected with the second dust removal pipe, and a hood opening of the side-suction dust hood is obliquely arranged. The dust hood for the blast furnace taphole not only reduces energy consumption, improves the working environment of a cast house, but also can improve the smoke dust collecting efficiency. But the shortcoming is that the problem that this patent exists the flue gas capture ability subalternation, can't reduce the injury because of the splash causes.
As another example, the Chinese patent: application No.: 201611269560.2, patent name: the utility model provides a dust collector is inhaled on blast furnace taphole top, authorizes day: 2017.03.08. the patent is to the dust collector among the horizontal tapping machine technique of current blast furnace configuration weak ability of spreading in high-order operation, because of the lateral wind influences escape phenomenon serious, the problem such as casting house operational environment difference. This scheme has adopted a dust collector is inhaled on blast furnace cast house top, including high-order wind gap platform and low-order cast house platform, high-order wind gap platform sets up in low-order cast house platform top, high-order wind gap platform passes through wind gap platform stand, the blast furnace frame supports, low-order cast house platform passes through low-order cast house platform stand, the blast furnace frame post supports, blast furnace frame post upper portion is provided with the ring roof beam, the dust cage covers in high-order wind gap platform and low-order cast house platform and ring roof beam top. The device is simple in structure and easy to operate. But the defects of the patent include weak trapping capacity caused by splashing, serious transverse wind escape phenomenon, poor working environment and the like.
Content of patent
1. Technical problem to be solved by patent
The utility model aims to overcome the problems of weak trapping capacity, serious escape phenomenon in a dead zone, poor operating environment of a cast house and the like of the existing blast furnace top dust absorption and removal device in the operation and provides a modularized detachable blast furnace cast house combined dust removal device. The combined dust removal device for the blast furnace tapping adopts the design idea that the dust removal device of the skimmer and the modified large top suction hood are combined into a whole, so that the combined dust removal device for the blast furnace tapping is modularized, can be disassembled and the like, greatly improves the dust removal capacity of the tapping part of the blast furnace, and has simple structure, safety and reliability.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses a modularized detachable blast furnace cast house combined dust removal device, which comprises a three-section pipe cover top suction cover dust removal device and a detachable skimmer dust removal cover, wherein the three-section pipe cover top suction cover dust removal device comprises a steel structure frame, a large-area three-section pipe cover top suction cover, a tuyere small sleeve safety baffle, three sections of pipe covers and a transverse wind blocking fireproof barrier; the large-area three-section pipe cover top suction cover, the tuyere small sleeve safety baffle, the three-section pipe cover and the transverse wind resistance fireproof barrier are respectively connected with the steel structure frame; the detachable skimmer dust hood is located below the three-section pipe hood top suction hood dust removal device, and the top of the detachable skimmer dust hood is connected with the steel structure frame.
As a further improvement of the invention, the steel structure frame comprises a large top suction hood ring beam, a detachable elevated ring beam and three sections of pipe hood top suction hood stand columns, wherein the large top suction hood ring beam and the detachable elevated ring beam are positioned on a high-position tuyere platform, and the three sections of pipe hood top suction hood stand columns are arranged on a low-position tapping field platform; the steel structure frame is made of H-shaped steel with a light steel structure; the steel structure frame can be detached.
As a further improvement of the invention, a detachable elevated secondary beam is arranged in the detachable elevated ring beam, and a vent hole is reserved between the detachable elevated secondary beams.
As a further improvement of the invention, one end of the tuyere small sleeve safety baffle is connected with the high-position tuyere platform, the other end of the tuyere small sleeve safety baffle is connected with the three-section pipe cover top suction cover stand column, the transverse wind-blocking fireproof barrier is fixed above the high-position tuyere platform through the large top suction cover ring beam, the low-position iron tapping field platform is provided with the low-steric-hindrance transverse wind-blocking fireproof barrier, and the transverse wind-blocking fireproof barrier and the low-steric-hindrance transverse wind-blocking fireproof barrier can ensure that the integral sealing performance of the three-section pipe cover top suction cover dust removal device and the detachable skimmer dust removal cover is better, improve the dust removal efficiency and simultaneously avoid the damage caused by splashing during tapping.
As a further improvement of the invention, a large top suction hood ring beam below the large-area three-section pipe hood top suction hood is rectangular or rhombic, and a heat insulation layer is arranged on the large top suction hood ring beam.
As a further improvement of the invention, three sections of pipe cover circumference baffles are arranged around the three sections of pipe covers, the three sections of pipe cover circumference baffles are arranged on three sections of pipe cover surrounding stand columns, the three sections of pipe cover surrounding stand columns are connected with a steel structure frame of a three sections of pipe cover top suction cover dust removal device, and electric valves are arranged on the three sections of pipe covers.
As a further improvement of the invention, the detachable skimmer dust hood comprises a skimmer dust hood, a hood top baffle and a flue gas guide hood; the bottom of the cover top baffle is arranged on a dust collecting cover of the skimmer, and the top of the cover top baffle is connected with the large top suction cover ring beam; the smoke guide cover is arranged on one side of the dust collection cover of the skimmer and is consistent with the slag discharge direction; and a heat insulation layer is arranged on the large top suction hood ring beam and is made of heat insulation castable. And a cover top baffle positioning piece is arranged on the side of the cover top baffle far away from the iron outlet, the upper end of the cover top baffle positioning piece is connected with the large top suction cover ring beam, and the lower end of the cover top baffle positioning piece extends into the dust collection cover housing of the skimmer.
As a further improvement of the invention, a cover top baffle heat-insulating layer ring baffle is arranged on the side of the cover top baffle close to the taphole, and a cover top baffle heat-insulating layer is arranged between the cover top baffle and the cover top baffle heat-insulating layer ring baffle; the shield top baffle heat-insulating layer ring baffle, the shield top baffle heat-insulating layer, the shield top baffle and the shield top baffle positioning piece are reinforced by a shield top baffle heat-insulating layer reinforcing rib plate and fixed through a shield top baffle heat-insulating layer anchoring piece, and the shield top baffle heat-insulating layer is made of heat-insulating pouring materials.
As a further improvement of the invention, the skimmer dust collection cover and the cover top baffle positioning piece are connected through a cover top baffle fastening connecting rod, a triangle is formed among the skimmer dust collection cover, the cover top baffle positioning piece and the cover top baffle fastening connecting rod, and the number of the cover top baffle fastening connecting rods is not less than two; one end of the cover top baffle fastening connecting rod is connected with the top bolt of the skimmer dust collection cover through the cover top baffle fastening connecting rod base, the other end of the cover top baffle fastening connecting rod is connected with the cover top baffle positioning piece through the cover top baffle fastening connecting rod base, and the cover top baffle fastening connecting rod base is fixedly connected with the skimmer dust collection cover and the cover top baffle positioning piece through the cover top baffle connecting rod fastening piece.
As a further improvement of the invention, a thermal insulation layer boundary baffle is arranged outside the skimmer dust hood housing and on the side of the cover top baffle far away from the taphole, an outer thermal insulation layer of the dust hood is arranged between the thermal insulation layer boundary baffle and the outer wall of the skimmer dust hood housing, the thermal insulation layer boundary baffle, the outer thermal insulation layer of the dust hood and the outer wall of the skimmer dust hood housing are fixed by a thermal insulation layer anchoring part, and the outer thermal insulation layer of the dust hood is made of thermal insulation castable.
As a further improvement of the invention, the inner wall of the dust hood housing of the skimmer is provided with a dust hood inner heat insulation layer ring baffle, an inner heat insulation layer of the dust hood is arranged between the dust hood inner heat insulation layer ring baffle and the skimmer dust hood housing, the inner wall of the dust hood housing of the skimmer, the inner heat insulation layer of the dust hood and the dust hood inner heat insulation layer ring baffle are reinforced by a dust hood inner reinforcing rib plate and fixed by a dust hood inner heat insulation layer anchoring part, and the inner heat insulation layer of the dust hood is a heat insulation pouring material.
As a further improvement of the invention, a dust hood observation hole is formed in one corner of the skimmer dust hood housing close to the bottom of the taphole side, and a dust hood observation second hole is formed in the middle of the skimmer dust hood housing far away from the bottom of the taphole side; the dust hood base is arranged on the periphery of the bottom of the dust hood housing of the skimmer and fixed with the platform through base reinforcing ribs.
As a further improvement of the invention, a flue gas diversion hole is arranged between the flue gas diversion cover shell and the skimmer dust collection cover housing, and the lower part of the flue gas diversion cover is sleeved with an outer flue gas discharge pipeline; the bottom of the flue gas guide cover shell is provided with a flue gas guide cover base, and the flue gas guide cover base is fixed on the platform through a reinforcing rib plate.
As a further improvement of the invention, lifting lugs are arranged on the periphery of the dust hood housing of the skimmer, and the number of the lifting lugs is not less than four; lifting holes are formed in the lifting lugs.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the modularized detachable blast furnace cast house combined dust removal device, the arrangement that the three-section pipe cover top suction cover dust removal device and the detachable skimmer dust removal cover are combined into a whole has an ultra-large collecting capacity for primary smoke dust and secondary smoke dust, so that the production efficiency is further improved, the cast quality can be stably improved, and the economic benefit is improved;
(2) according to the modularized detachable blast furnace cast house combined dust removal device, the steel structure frame adopts detachable H-shaped steel with a light steel structure, the large-area three-section pipe cover top suction cover body adopts a structure that the beam is suspended downwards, the horizontal rotation operation of a tapping machine and a mud gun machine along the existing foundation in production is ensured, the stable operation of equipment can be realized, and the dust removal is safe and reliable; the operation is simple, the investment is saved, and the operation cost is low;
(3) according to the modularized detachable blast furnace cast house combined dust removal device, the safe baffle plate is sleeved at the tuyere, the transverse wind resistance fireproof barrier and the low-steric-hindrance transverse wind resistance fireproof barrier are arranged, so that the overall sealing performance of the three-section pipe cover top suction cover dust removal device and the detachable skimmer dust removal cover is good, the dust removal efficiency is improved, and meanwhile, the damage caused by splashing during molten iron discharging is avoided; in addition, the tuyere small sleeve safety baffle, the transverse wind resistance fireproof barrier and the low steric hindrance transverse wind fireproof barrier are only opened during operation and reset after the operation is finished, so that the vibration in the operation process is avoided;
(4) according to the modular detachable blast furnace cast house combined dust removal device, the electric valve arranged in the modular detachable blast furnace cast house combined dust removal device can be interlocked with a PLC (programmable logic controller) of a blast furnace central control room through a beside-machine operation box, so that the on-off is convenient, and the dust removal operation is convenient;
(5) according to the modularized detachable blast furnace cast house combined dust removal device, the method that the detachable skimmer dust collection cover top baffle is additionally arranged, the skimmer dust collection cover is close to the side of a cast hole, the heat insulation facility is additionally arranged on the top baffle of the skimmer dust collection cover, the skimmer dust collection cover and the flue gas guide cover are additionally provided with the wider base is adopted, and the like, so that the blast furnace skimmer dust collection cover device has good smoke dust collecting capacity, prevents damage caused by splashing, has a good heat insulation effect and is convenient to install and maintain;
(6) according to the modular detachable blast furnace cast house combined dust removal device, the cover top baffle shell is attached to the top suction cover ring beam and the heat insulation facility of the top suction cover ring beam, so that on one hand, the flue gas cache capacity of the large top suction cover is relatively increased, and the secondary flue gas capture rate of the large top suction cover is improved; accidental injury to nearby operators caused by accidental molten iron splashing in the links of tapping, molten iron discharging, sand filling, blocking and the like of the tap hole is avoided; thirdly, the capture rate of the flue gas of the dust hood device of the detachable three-component skimmer is improved;
(7) according to the modularized detachable blast furnace cast house combined dust removal device, the side, close to the taphole, of the cover top baffle shell is provided with the cover top baffle heat-insulating layer ring baffle, and a cover top baffle heat-insulating layer is arranged between the cover top baffle shell and the cover top baffle heat-insulating layer ring baffle, so that burning loss caused by accidental splashing of molten iron during opening of a tapping machine, molten iron discharging and sealing of a sand mud gun cushion of a taphole of a dust-collecting cover of a skimmer can be effectively avoided, and the service life of the detachable three-component skimmer dust removal cover device can be effectively prolonged;
(8) according to the modular detachable combined dust removal device for the blast furnace cast house, the dust hood base is arranged on the periphery of the bottom of the dust hood housing of the skimmer, so that the possible influence of the superposed load of the dust hood of the skimmer and the hood top baffle on the large pressure of the side of the molten iron runner can be effectively reduced, and the service life of the molten iron runner can be maintained and prolonged; the production cost is reduced;
(9) according to the modularized detachable blast furnace cast house combined dust removal device, the flue gas guide cover base is adopted, so that the possible damage of the vertical load of the flue gas guide cover to a blast furnace platform can be effectively reduced, and the maintenance cost is avoided;
(10) the modularized detachable blast furnace cast house combined dust removal device provided by the invention is integrally of a light steel structure, is light in weight, and maintains the optimal transportation capacity of the existing travelling crane;
(11) the modularized detachable blast furnace cast house combined dust removal device can be assembled and disassembled in a modularized manner, is simple to maintain, can improve the labor enthusiasm of workers, improves the work efficiency, and promotes stable and smooth production;
(12) the modularized detachable blast furnace cast house combined dust removal device provided by the invention realizes butt joint of the top suction hood ring beam, the hood top baffle, the skimmer dust hood, the flue gas guide hood shell and the sleeved outer flue gas exhaust pipeline, forms a relatively closed dust removal environment, ensures effective capture of flue gas in the skimmer dust hood device and smooth airflow organization, can realize stable operation, improves the production efficiency, saves investment and is low in operation cost, and can stably improve the economic benefit of users.
Drawings
FIG. 1 is a schematic plan view of a removable three-component skimmer dust hood apparatus;
FIG. 2 is a view of the A-A side of a removable three component skimmer dust hood apparatus;
FIG. 3 is a view of the B-B side of a removable three-component skimmer dust hood apparatus.
The reference numerals in the schematic drawings illustrate: 1. the tuyere is sleeved with a safety baffle; 2. a detachable elevated ring beam; 3. block the fire-proof shelves of the horizontal wind; 4. the three sections of pipe covers are supported against the suction cover stand columns; 5. three sections of pipe covers; 6. three sections of pipe cover circumference baffles; 7. a large-area three-section pipe cover is used for jacking and sucking the cover; 8. a detachable elevated secondary beam; 9. the three sections of pipe covers enclose and block the upright posts; 10. an electrically operated valve; 11. a skimmer dust cage; 12. a boundary baffle plate of a heat insulation layer of the dust hood; 13. a cover top baffle; 14. a cover top baffle plate positioning piece; 15. a dust cage observation hole; 16. a flue gas diversion hole; 17. the cover top baffle plate is fastened on the connecting rod base; 18. the cover top baffle plate is fastened with a connecting rod; 19. a flue gas guide sleeve; 20. a high tuyere platform; 21. a low-level cast house platform; 22. a low steric hindrance transverse wind fire barrier; 23. a hood top baffle connecting rod fastener; 24. a detachable skimmer dust hood; 25. a flue gas guide sleeve base; 26. an outer flue gas duct; 27. a second observation hole of the dust hood; 28. a dust cage base; 29. and (7) lifting lugs.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
As shown in fig. 1, fig. 2 and fig. 3, the modular detachable blast furnace cast house combined dust removing device of the present embodiment includes a three-segment pipe cover top suction cover dust removing device and a detachable skimmer dust removing cover 24, wherein the three-segment pipe cover top suction cover dust removing device includes a steel structure frame, a large-area three-segment pipe cover top suction cover 7, a tuyere small-sleeve safety baffle 1, a three-segment pipe cover 5 and a transverse wind blocking fireproof barrier 3; the large-area three-section pipe cover top suction cover 7, the tuyere small sleeve safety baffle 1, the three-section pipe cover 5 and the transverse wind-resistant fireproof barrier 3 are respectively connected with the steel structure frame; the detachable skimmer dust hood 24 is located below the three-section pipe hood top suction hood dust removal device, and the top of the detachable skimmer dust hood 24 is connected with the steel structure frame.
The three-section pipe cover top suction hood dust collector and the detachable skimmer dust hood in the embodiment are combined into one, so that the ultra-large collecting capacity is realized on primary smoke dust and secondary smoke dust, the production efficiency is further improved, the tapping quality can be stably improved, and the economic benefit is improved.
Example 2
As shown in fig. 1, 2 and 3, this embodiment is substantially the same as embodiment 1, and preferably, the steel structural frame includes a large top suction hood ring beam, a detachable elevated ring beam 2 and three sections of pipe hood top suction hood columns 4, the detachable elevated ring beam 2 is located on the high-level tuyere platform 20, and the three sections of pipe hood top suction hood columns 4 are arranged on the low-level tapping site platform 21; the steel structure frame is made of H-shaped steel with a light steel structure; the steel structure frame can be detached.
Preferably, set up detachable elevated secondary beam 8 in the detachable elevated ring roof beam 2, leave the air vent between the detachable elevated secondary beam 8.
Preferably, a large top suction hood ring beam below the large-area three-section pipe hood top suction hood 7 is rectangular or rhombic, and a heat insulation layer is arranged on the large top suction hood ring beam.
In the embodiment, the steel structure frame adopts detachable H-shaped steel with a light steel structure, and the large-area three-section pipe cover top suction cover body adopts a structure of hanging under a beam, so that the horizontal rotation operation of the tapping machine and the clay gun along the existing foundation in production is ensured, the stable operation of equipment can be realized, and the dust removal is safe and reliable; simple operation, low investment and low operation cost.
Example 3
As shown in fig. 1, fig. 2 and fig. 3, this embodiment is substantially the same as embodiment 2, and preferably, one end of the tuyere small safety baffle 1 is connected with the high-position tuyere platform 20, the other end is connected with the three-section pipe cover top suction cover upright post 4, the transverse wind-resistant fireproof barrier 3 is fixed above the high-position tuyere platform 20 through a large top suction cover ring beam, and a low-position tapping platform 21 is provided with a low-position transverse wind-resistant fireproof barrier 22.
Preferably, one end of the tuyere small sleeve safety baffle 1 is connected with a high-position tuyere platform 20, the other end of the tuyere small sleeve safety baffle is connected with a three-section pipe cover top suction cover upright post 4, the transverse wind-resistant fireproof barrier 3 is fixed above the high-position tuyere platform 20 through a large top suction cover ring beam, and a low-position tapping site platform 21 is provided with a low-steric-hindrance transverse wind-resistant fireproof barrier 22.
In the embodiment, the transverse wind resisting fireproof barrier and the low-steric-hindrance transverse wind resisting fireproof barrier can ensure that the overall sealing performance of the three-section pipe cover top suction cover dust removal device and the detachable skimmer dust removal cover is better, the dust removal efficiency is improved, and meanwhile, the damage caused by splashing during molten iron discharging is avoided; in addition, the tuyere small sleeve safety baffle, the transverse wind-resistant fireproof barrier and the low-steric-hindrance transverse wind-resistant fireproof barrier are only opened during operation and reset after the operation is finished, so that the vibration in the operation process is avoided.
Example 4
As shown in fig. 1, fig. 2 and fig. 3, this embodiment is substantially the same as embodiment 3, preferably, three sections of pipe cover circumference baffles 6 are arranged around the three sections of pipe covers 5, the three sections of pipe cover circumference baffles 6 are arranged on three sections of pipe cover circumference blocking upright posts 9, the three sections of pipe cover circumference blocking upright posts 9 are connected with a steel structure frame of a dust removing device of a top suction cover of the three sections of pipe covers, and an electric valve 10 is configured on the three sections of pipe covers 5.
The electric valve arranged in the invention can be interlocked with a PLC of a central control room of the blast furnace through a machine side operation box, so that the opening and the closing are convenient, and the dust removal operation is convenient.
Example 5
As shown in fig. 1, 2 and 3, this embodiment is substantially the same as embodiment 1, and preferably, the detachable skimmer dust hood 24 comprises a skimmer dust hood 11, a hood top baffle 13 and a flue gas guide hood 19; the bottom of the cover top baffle 13 is arranged on the dust collection cover 11 of the skimmer, and the top of the cover top baffle 13 is connected with the large top suction cover ring beam; the flue gas guide sleeve 19 is arranged on one side of the dust collection cover 11 of the skimmer and is consistent with the slag discharge direction; a heat insulation layer is arranged on the large top suction hood ring beam and is made of heat insulation castable; and a cover top baffle positioning piece 14 is arranged at the side of the cover top baffle 13 far away from the iron outlet, the upper end of the cover top baffle positioning piece 14 is connected with the large top suction cover ring beam, and the lower end of the cover top baffle positioning piece 14 extends into the dust collection cover 11 of the skimmer.
The dust hood device of the blast furnace skimmer has good dust collecting capacity, prevents damage caused by splashing, has good heat insulation effect and is convenient to install and maintain; the whole vehicle adopts a light steel structure, so that the weight is light, and the optimal transportation capacity of the existing vehicle is maintained; the modular assembly and disassembly can be realized, the maintenance is simple, the labor enthusiasm of workers can be improved, the work efficiency is improved, and the stable and smooth production is promoted; the butt joint of the top suction hood ring beam, the hood top baffle, the skimmer dust hood, the flue gas guide hood shell and the sleeved outer exhaust gas pipeline is realized, a relatively closed dust removal environment is formed, the effective capture and smooth airflow organization of flue gas in the skimmer dust hood device are ensured, the stable operation can be realized, the production efficiency is improved, the investment is saved, the operation cost is low, and the economic benefit of a user can be stably improved.
Example 6
As shown in fig. 1, 2 and 3, this embodiment is substantially the same as embodiment 5, and preferably, a cover top baffle heat-insulating layer ring baffle is disposed on a side of the cover top baffle 13 near the taphole, and a cover top baffle heat-insulating layer is disposed between the cover top baffle 13 and the cover top baffle heat-insulating layer ring baffle; the shield top baffle heat-insulating layer ring baffle, the shield top baffle heat-insulating layer, the shield top baffle and the shield top baffle positioning piece are reinforced by a shield top baffle heat-insulating layer reinforcing rib plate and fixed through a shield top baffle heat-insulating layer anchoring piece, and the shield top baffle heat-insulating layer is made of heat-insulating pouring materials.
On one hand, the flue gas caching capacity of the large top suction cover is relatively increased, and the secondary flue gas trapping rate of the large top suction cover is improved; accidental injury to nearby operators caused by accidental molten iron splashing in the links of tapping, molten iron discharging, sand filling, blocking and the like of the tap hole is avoided; and thirdly, the capture rate of the flue gas of the dust hood device of the detachable three-component skimmer is improved.
Example 7
As shown in fig. 1, 2 and 3, the present embodiment is substantially the same as embodiment 6, preferably, the skimmer dust hood 11 and the hood top baffle positioning piece 14 are connected by a hood top baffle fastening link 18, a triangle is formed among the skimmer dust hood 11, the hood top baffle positioning piece 14 and the hood top baffle fastening link 18, and the hood top baffle fastening links 18 are not less than two; one end of the hood top baffle fastening connecting rod 18 is connected with the top bolt of the skimmer dust collection hood 11 through the hood top baffle fastening connecting rod base 17, the other end of the hood top baffle fastening connecting rod 18 is connected with the hood top baffle positioning piece 14 through the hood top baffle fastening connecting rod base 17, and the hood top baffle fastening connecting rod base 17 is fixedly connected with the hood shell of the skimmer dust collection hood 11 and the hood top baffle positioning piece 14 through the hood top baffle fastening connecting rod fastening piece.
The method can effectively reduce the possible influence of the superposed load of the dust collecting cover of the skimmer and the cover top baffle on the large pressure of the side of the molten iron ditch, and maintain and prolong the service life of the molten iron ditch; the production cost is reduced; the device can operate stably.
Example 8
As shown in fig. 1, 2 and 3, this embodiment is substantially the same as embodiment 5, and preferably, a dust hood thermal insulation boundary baffle 12 is arranged outside the shell of the skimmer dust hood 11 and on the side of the shell of the hood top baffle 13 far from the taphole, and a dust hood external thermal insulation layer is arranged between the dust hood thermal insulation boundary baffle 12 and the outer wall of the shell of the skimmer dust hood 11; the heat insulation layer boundary baffle, the outer heat insulation layer of the dust hood and the outer wall of the dust hood housing of the skimmer are fixed through a heat insulation layer anchoring part, and the outer heat insulation layer of the dust hood is made of heat insulation castable.
Preferably, the inner wall of the skimmer dust hood 11 is provided with a dust hood inner heat insulation layer ring baffle, an inner heat insulation layer of the dust hood is arranged between the skimmer dust hood inner heat insulation layer ring baffle and the skimmer dust hood 11 hood, the inner wall of the skimmer dust hood 11 hood, the inner heat insulation layer of the dust hood and the dust hood inner heat insulation layer ring baffle are reinforced by a dust hood inner reinforcing rib plate and fixed by a dust hood inner heat insulation layer anchoring part, and the dust hood inner heat insulation layer is a heat insulation casting material.
The embodiment can effectively avoid the burning loss of the cover top baffle plate caused by accidental splashing of molten iron during the opening of the tapping machine at the tapping hole, molten iron discharging and the sealing of the mortar gun machine, and can effectively prolong the service life of the dust hood device of the detachable three-component skimmer; the cover top baffle fastening connecting rod can effectively connect the skimming device dust collecting cover housing and the cover top baffle positioning piece to form triangular connection, so that the device can stably run.
Example 9
As shown in fig. 1, 2 and 3, this embodiment is substantially the same as embodiment 8, and preferably, a dust hood observation hole 15 is formed at one corner of the shell of the dust hood 11 near the bottom of the taphole side, and a dust hood observation second hole 27 is formed at the middle of the shell of the dust hood 11 far from the bottom of the taphole side; the dust hood base 28 is arranged on the periphery of the bottom of the dust hood 11 of the skimmer, and the dust hood base 28 is fixed with the platform through a base reinforcing rib.
In the embodiment, the two observation holes are more favorable for observing the molten iron condition, so that the molten iron condition can be conveniently adjusted in time, and the tapping quality is improved; the adoption of the flue gas guide cover base can effectively reduce the possible damage of the vertical load of the flue gas guide cover to the blast furnace platform, and the maintenance cost is avoided.
Example 10
As shown in fig. 1, fig. 2 and fig. 3, this embodiment is substantially the same as embodiment 9, preferably, a flue gas diversion hole 16 is formed between the shell of the flue gas diversion cover 19 and the shell of the skimmer dust collection cover 11, and an outer flue gas discharge pipe 26 is sleeved on the lower portion of the flue gas diversion cover 19; the bottom of the shell of the flue gas guide cover 19 is provided with a flue gas guide cover base 25, and the flue gas guide cover base 25 is fixed on the platform through a reinforcing rib plate.
The adoption of the flue gas guide cover base in the embodiment can effectively reduce the possible damage of the vertical load of the flue gas guide cover to the blast furnace platform, and avoids the maintenance cost.
Example 11
As shown in fig. 1, 2 and 3, this embodiment is substantially the same as embodiment 5, and preferably, no less than four lifting lugs are arranged on the periphery of the dust hood housing of the skimmer; lifting holes are formed in the lifting lugs.
The lifting lug in the embodiment is convenient for lifting the dust hood housing of the skimmer by a crane, is convenient to detach, and realizes the stability and safety of the lifting process.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (9)
1. The utility model provides a detachable blast furnace casting house combination dust collector of modularization which characterized in that: the device comprises a three-section pipe cover top suction cover dust removal device and a detachable skimmer dust removal cover (24), wherein the three-section pipe cover top suction cover dust removal device comprises a steel structure frame, a large-area three-section pipe cover top suction cover (7), a tuyere small sleeve safety baffle (1), three sections of pipe covers (5) and a transverse wind resistance fireproof partition (3); the large-area three-section pipe cover top suction cover (7), the tuyere small sleeve safety baffle (1), the three-section pipe cover (5) and the transverse wind resistance fireproof barrier (3) are respectively connected with the steel structure frame; the detachable skimmer dust hood (24) is positioned below the three-section pipe hood top suction hood dust removal device, and the top of the detachable skimmer dust hood (24) is connected with the steel structure frame;
the detachable skimmer dust hood (24) comprises a skimmer dust hood (11), a hood top baffle (13) and a flue gas guide hood (19); the bottom of the cover top baffle (13) is arranged on the dust collection cover (11) of the skimmer, and the top of the cover top baffle (13) is connected with the large top suction cover ring beam; the flue gas guide sleeve (19) is arranged on one side of the dust collection cover (11) of the skimmer and is consistent with the slag discharge direction; a thermal insulation layer is arranged on the large top suction hood ring beam; and a cover top baffle positioning piece (14) is arranged at the side of the cover top baffle (13) far away from the taphole, the upper end of the cover top baffle positioning piece (14) is connected with the large top suction cover ring beam, and the lower end of the cover top baffle positioning piece (14) extends into the dust collection cover (11) of the skimmer.
2. The modular detachable blast furnace cast house combined dust removing device of claim 1, wherein: the steel structure frame comprises a large top suction hood ring beam, a detachable elevated ring beam (2) and three sections of pipe hood top suction hood columns (4), wherein the large top suction hood ring beam and the detachable elevated ring beam (2) are located on a high-position air port platform (20), and the three sections of pipe hood top suction hood columns (4) are arranged on a low-position tapping site platform (21).
3. The modular detachable blast furnace cast house combined dust removing device of claim 2, wherein: one end of the tuyere small sleeve safety baffle (1) is connected with a high-position tuyere platform (20), the other end of the tuyere small sleeve safety baffle is connected with a three-section pipe cover top suction cover upright post (4), the transverse wind-resistant fireproof barrier (3) is fixed above the high-position tuyere platform (20) through a large top suction cover ring beam, and a low-position tapping platform (21) is provided with a low-steric-hindrance transverse wind-resistant fireproof barrier (22).
4. The modular detachable blast furnace cast house combined dust removing device of claim 3, wherein: three pipe cover periphery baffles (6) are arranged on the periphery of the three pipe covers (5), the three pipe cover periphery baffles (6) are arranged on three pipe cover surrounding stand columns (9), the three pipe cover surrounding stand columns (9) are connected with a steel structure frame of a three pipe cover top suction cover dust removal device, and electric valves (10) are configured on the three pipe covers (5).
5. The modular detachable blast furnace cast house combined dust removing device of claim 4, wherein: a cover top baffle heat-insulating layer ring baffle is arranged on the side, close to the taphole, of the cover top baffle (13), and a cover top baffle heat-insulating layer is arranged between the cover top baffle (13) and the cover top baffle heat-insulating layer ring baffle.
6. The modular detachable blast furnace cast house combined dust removing device of claim 5, wherein: the skimmer dust collection cover (11) is connected with the cover top baffle positioning piece (14) through a cover top baffle fastening connecting rod (18), a triangle is formed among the skimmer dust collection cover (11), the cover top baffle positioning piece (14) and the cover top baffle fastening connecting rod (18), and the number of the cover top baffle fastening connecting rods (18) is not less than two; one end of the cover top baffle fastening connecting rod (18) is connected with a top bolt of the skimmer dust collection cover (11) through the cover top baffle fastening connecting rod base (17), the other end of the cover top baffle fastening connecting rod (18) is connected with the cover top baffle positioning piece (14) through the cover top baffle fastening connecting rod base (17) in a bolt mode, and the cover top baffle fastening connecting rod base (17) is respectively fixedly connected with the cover shell of the skimmer dust collection cover (11) and the cover top baffle positioning piece (14) through the cover top baffle connecting rod fastening piece (23).
7. The modular detachable blast furnace cast house combined dust removing device of claim 6, wherein: a dust hood thermal insulation layer boundary baffle (12) is arranged outside the shell of the skimmer dust hood (11) and on the side of the shell of the hood top baffle (13) far away from the iron notch, and a dust hood outer thermal insulation layer is arranged between the dust hood thermal insulation layer boundary baffle (12) and the outer wall of the skimmer dust hood (11) shell.
8. The modular detachable blast furnace cast house combined dust removing device of claim 7, wherein: a dust hood observation hole (15) is formed in one corner of the bottom of the skimmer dust hood (11) close to the taphole side, and a dust hood observation second hole (27) is formed in the middle of the bottom of the skimmer dust hood (11) far away from the taphole side; and a dust collection cover base (28) is arranged on the periphery of the bottom of the dust collection cover (11) of the skimmer, and the dust collection cover base (28) is fixed with the platform through a base reinforcing rib.
9. The modular detachable blast furnace cast house combined dust removing device of claim 8, wherein: a smoke diversion hole (16) is formed between the shell of the smoke diversion cover (19) and the shell of the skimmer dust collection cover (11), and the lower part of the smoke diversion cover (19) is sleeved with an outer smoke exhaust pipeline (26); the flue gas guide cover is characterized in that a flue gas guide cover base (25) is arranged at the bottom of the shell of the flue gas guide cover (19), and the flue gas guide cover base (25) is fixed on the platform through reinforcing rib plates.
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| CN201810696501.6A CN108796159B (en) | 2018-06-29 | 2018-06-29 | Modular detachable blast furnace cast house combined dust removal device |
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| CN201810696501.6A CN108796159B (en) | 2018-06-29 | 2018-06-29 | Modular detachable blast furnace cast house combined dust removal device |
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| CN110306003A (en) * | 2019-06-26 | 2019-10-08 | 陕西龙门钢铁有限责任公司 | Cast house totally enclosed type dust excluding hood before a kind of State of Blast Furnace |
| CN115433795B (en) * | 2022-09-14 | 2023-12-05 | 唐山学院 | Device and method for preventing smoke dust from overflowing in blast furnace cast house |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101559305B (en) * | 2009-05-22 | 2011-04-20 | 沈阳远大环境工程有限公司 | Blast furnace flue gas shunting trapping parallel dust-removing technology |
| CN102586522A (en) * | 2012-02-29 | 2012-07-18 | 中冶南方工程技术有限公司 | Dust hood for blast furnace tap hole |
| KR200475871Y1 (en) * | 2013-09-09 | 2015-01-13 | 주식회사 우진 | Automatic binding and releasing apparatus of slag skimmer for melting operation of iron |
| CN104313220A (en) * | 2014-10-11 | 2015-01-28 | 江苏永钢集团有限公司 | Dedusting structure of stokehold scrap iron runner of medium- and small-sized blast furnaces |
| CN106480249B (en) * | 2016-12-31 | 2018-11-30 | 马钢集团设计研究院有限责任公司 | A kind of blast furnace iron notch top suction dust-extraction unit |
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